Unit power rating balancing for differential-power-processing-based distributed photovoltaic systems
Differential power processing (DPP) architectures are effective solutions for photovoltaic (PV) systems experiencing uncertainties in environmental conditions, such as non-uniform irradiation, which can significantly degrade electricity production efficiency and operating safety. Among the different...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2025-05-01
|
| Series: | Frontiers in Energy Research |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fenrg.2025.1611573/full |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849716688026599424 |
|---|---|
| author | Jiahua Ni Zhixing Zhao Yinxiao Zhu |
| author_facet | Jiahua Ni Zhixing Zhao Yinxiao Zhu |
| author_sort | Jiahua Ni |
| collection | DOAJ |
| description | Differential power processing (DPP) architectures are effective solutions for photovoltaic (PV) systems experiencing uncertainties in environmental conditions, such as non-uniform irradiation, which can significantly degrade electricity production efficiency and operating safety. Among the different architectures available, the PV-to-bus DPP configuration has shown excellent performances for control flexibility and galvanic isolation capability. However, recent control schemes for PV-to-bus architectures offer lower-than-desirable efficiency enhancements, such as those involving implementation complexities and unit power distributions. Hence, a unit power rating balancing (UPRB) scheme is proposed in this work to reconfigure the distribution of differential power among the unit converters with the aim of ensuring submodule-level optimization and enhanced performance of the entire PV system. The proposed UPRB scheme integrates perturbation-and-observation-based maximum power-point tracking units to maximize the energy harvested from PV modules, and the unit balance-point tracking unit is employed to determine the optimal string current reference directly for mitigating the unbalanced differential power in the DPP units. By suppressing the maximum processed power in each DPP unit, the capital cost and system size can be reduced. Simulation and experimental studies were conducted, whose evaluation results support the applicability of the proposed control scheme. |
| format | Article |
| id | doaj-art-7c09c97492cc4d70b6509cab85695de4 |
| institution | DOAJ |
| issn | 2296-598X |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Energy Research |
| spelling | doaj-art-7c09c97492cc4d70b6509cab85695de42025-08-20T03:12:54ZengFrontiers Media S.A.Frontiers in Energy Research2296-598X2025-05-011310.3389/fenrg.2025.16115731611573Unit power rating balancing for differential-power-processing-based distributed photovoltaic systemsJiahua Ni0Zhixing Zhao1Yinxiao Zhu2PowerChina Huadong Engineering Cooperation Limited, Hangzhou, ChinaPowerChina Huadong Engineering Cooperation Limited, Hangzhou, ChinaCollege of Electrical Engineering, Zhejiang University, Hangzhou, ChinaDifferential power processing (DPP) architectures are effective solutions for photovoltaic (PV) systems experiencing uncertainties in environmental conditions, such as non-uniform irradiation, which can significantly degrade electricity production efficiency and operating safety. Among the different architectures available, the PV-to-bus DPP configuration has shown excellent performances for control flexibility and galvanic isolation capability. However, recent control schemes for PV-to-bus architectures offer lower-than-desirable efficiency enhancements, such as those involving implementation complexities and unit power distributions. Hence, a unit power rating balancing (UPRB) scheme is proposed in this work to reconfigure the distribution of differential power among the unit converters with the aim of ensuring submodule-level optimization and enhanced performance of the entire PV system. The proposed UPRB scheme integrates perturbation-and-observation-based maximum power-point tracking units to maximize the energy harvested from PV modules, and the unit balance-point tracking unit is employed to determine the optimal string current reference directly for mitigating the unbalanced differential power in the DPP units. By suppressing the maximum processed power in each DPP unit, the capital cost and system size can be reduced. Simulation and experimental studies were conducted, whose evaluation results support the applicability of the proposed control scheme.https://www.frontiersin.org/articles/10.3389/fenrg.2025.1611573/fulldifferential power processingphotovoltaic systemenergy harvestingunit power rating balancingefficiency |
| spellingShingle | Jiahua Ni Zhixing Zhao Yinxiao Zhu Unit power rating balancing for differential-power-processing-based distributed photovoltaic systems Frontiers in Energy Research differential power processing photovoltaic system energy harvesting unit power rating balancing efficiency |
| title | Unit power rating balancing for differential-power-processing-based distributed photovoltaic systems |
| title_full | Unit power rating balancing for differential-power-processing-based distributed photovoltaic systems |
| title_fullStr | Unit power rating balancing for differential-power-processing-based distributed photovoltaic systems |
| title_full_unstemmed | Unit power rating balancing for differential-power-processing-based distributed photovoltaic systems |
| title_short | Unit power rating balancing for differential-power-processing-based distributed photovoltaic systems |
| title_sort | unit power rating balancing for differential power processing based distributed photovoltaic systems |
| topic | differential power processing photovoltaic system energy harvesting unit power rating balancing efficiency |
| url | https://www.frontiersin.org/articles/10.3389/fenrg.2025.1611573/full |
| work_keys_str_mv | AT jiahuani unitpowerratingbalancingfordifferentialpowerprocessingbaseddistributedphotovoltaicsystems AT zhixingzhao unitpowerratingbalancingfordifferentialpowerprocessingbaseddistributedphotovoltaicsystems AT yinxiaozhu unitpowerratingbalancingfordifferentialpowerprocessingbaseddistributedphotovoltaicsystems |